The CRL 4" (102 mm) Vacuum Cup With Handle has the strength to grip and hold dry or oiled sheet metal, glass, plastic and other smooth-surface materials that weigh up to 6 lbs. (2.7 kg). The featured pistol grip design permits easy and positive holding, even with bulky work gloves, and it releases quickly. Not only is this tool versatile and responsive, but the precision-fabricated metal components also make it extremely durable.